Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8162075 | Vibration dampening mechanism for power tool A powered hammer includes a body in which is disposed a motor and a hammer mechanism driven by the motor when the motor is activated. A tool holder is coupled to a front portion of the body and which is capable of holding a cutting tool. The hammer mechanism, when d... | 04/24/2012 |
| D657222 | Impact wrench | 04/10/2012 |
| 8136559 | Planer A hand held electrically powered planer including a housing; an electric motor mounted within the housing; a work piece engaging shoe mounted on the underside of the housing having an aperture formed therethrough; and a cutting drum rotatably mounted within the hous... | 03/20/2012 |
| 8122972 | Drive mechanism for a power tool A hollow piston drive mechanism for a hammer drill comprises a crank pin 54 having a cylindrical link member 68 rigidly connected to a part-spherical bearing 70. The part-spherical bearing 70 is slidably and rotatably disposed in a part-s... | 02/28/2012 |
| 8109183 | Impact resistant tool bit and tool bit holder An impact resistant tool or tool bit holder has an active end for driving a fastener and a shanking end for securing to a power tool. The active end includes a body with a bore to receive the shank and a pocket to receive a damping mechanism. The shank includes an e... | 02/07/2012 |
| 8105201 | Flexing shift wire for PTO actuation In a power driver, a shifter assembly includes: a housing; a ring gear mounted for rotation on the housing; a shift collar mounted for rotation on the housing; an elongated shifter structure coupled to the ring gear and the shift collar, the shifter structure includ... | 01/31/2012 |
| 8104547 | Resilient stop assembly for impact tool A resilient stop assembly for an impact tool includes first and second resiliently deformable parts, and a substantially rigid part situated between the deformable parts. Each of the first and second resiliently deformable parts and the substantially rigid part comp... | 01/31/2012 |
| 8096456 | Fastener driving tool with retractable nose assembly A fastener driving tool arranged to drive fasteners into a workpiece includes a support, a pair of sub-assemblies movably mounted on the support, each sub-assembly comprising a motor and an associated flywheel, and a nose part retractable relative to the support. Th... | 01/17/2012 |
| 8087977 | Angle grinder An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush... | 01/03/2012 |
| 8087976 | Trigger assembly for angle grinder An angle grinder is provided including a trigger assembly for selectively actuating the angle grinder. A particle separation assembly is provided for the removal of any dust, particle, or artifacts that may have entered into the housing of the angle grinder. A brush... | 01/03/2012 |
| 8087472 | Vibration dampening system for a power tool and in particular for a powered hammer The present invention relates to a method for controlling a power tool comprising a housing, an electric motor, a tool holder for supporting a tool bit and a conversion mechanism for converting the rotational movement of the output shaft of the motor into a reciproc... | 01/03/2012 |
| 8074734 | Powered hammer with a vibration dampening mechanism A powered hammer is described comprising a housing, a tool holder mounted on the housing, a percussion mechanism arranged within the housing which mechanism includes a ram reciprocating in a longitudinal direction and being adapted to apply impacts on a tool bit sup... | 12/13/2011 |
| 8061000 | Anchor installation tool An anchor installation tool has an elongated member with a body portion and a head portion. The body portion includes an internal bore to receive a drill bit. The head portion projects from and has a diameter smaller than the body portion. The head portion is coaxia... | 11/22/2011 |
| D646947 | Drill | 10/18/2011 |
| D646854 | Polisher | 10/11/2011 |
| 8025197 | Profile lifter for a nailer A driving tool that includes a frame, a motor assembly and a resilient member. The motor assembly is coupled to the frame and includes an electric motor, a flywheel driven by the electric motor, a pinch roller and a driver disposed between the flywheel and the pinch... | 09/27/2011 |
| D645622 | Polisher | 09/20/2011 |
| D644494 | Impact driver | 09/06/2011 |
| 7988025 | Pneumatic fastener A nose casting assembly for a pneumatic fastener includes a body having a driver channel formed therein for receiving a driver blade. The body includes a first end having an aperture for allowing passage of a driver blade into the channel. The body further includes ... | 08/02/2011 |
| 7987921 | Hammer A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle pivotally mounted on the body about an axis; a vibration dampener which connects between the handle and the body and which reduces the amount of angular vibrations tr... | 08/02/2011 |
| D642443 | Hammer drill | 08/02/2011 |
| D641604 | Hammer drill | 07/19/2011 |
| 7975737 | Router base securing mechanism The present invention is directed to a mechanism and method for providing above the table securing/unsecuring of a router motor housing. The mechanism of the present invention employs a mechanical connection included on a pivot member to couple with a wrench device ... | 07/12/2011 |
| 7950315 | Tile saw A saw includes a base, a frame assembly disposed on the base, a first rail disposed on the frame assembly, and a table slidingly disposed on the first rail. The table has an upper surface for supporting a workpiece. A support assembly is disposed on the frame. A saw... | 05/31/2011 |
| 7896357 | Universal tool bit shank A universal tool shank can include an elongate body having first and second portions. The first portion can include at least one flat thereon for engagement with a recess in a first tool. The second portion can include at least one protrusion extending radially outw... | 03/01/2011 |
| D633354 | Pin nailer | 03/01/2011 |
| 7886841 | Power tool torque overload clutch A torque overload clutch for an electrical power tool, such as a percussion hammer drill, is provided. The clutch is accommodated in a cavity in a gear cog. Spring washers are used to urge ball bearings into indentations formed in the base of the cavity. The ball be... | 02/15/2011 |
| 7886838 | Hammer A hammer comprising: a body; a tool holder mounted on the body for holding a cutting tool; a handle, comprising a grip portion, pivotally mounted on the body about an axis of pivot; a first vibration dampener which connects between the handle and the body and which ... | 02/15/2011 |
| 7845426 | Actuation apparatus for power tool When the mode change knob of a multi-mode hammer drill is moved to the hammer only position, an electronic sensor sends a signal to a control logic circuit. When the user then depresses the trigger mechanically closing the ON/OFF switch, the control logic circuit ap... | 12/07/2010 |
| 7861807 | Drill bit including one piece cutting head A cutting head for a drill bit has a body with an overall cruciform shape. One pair of opposing arms defines a main cutting edge. The other pair of opposing arms defines an auxiliary edge. The main cutting edge is defined by rake surfaces and relief surfaces. Each r... | 01/04/2011 |
| D630075 | Grinder | 01/04/2011 |
| D626813 | Hammer | 11/09/2010 |
| D626394 | Drill | 11/02/2010 |
| 7818880 | Ram for powered hammer A method of manufacturing a ram configured to be mounted for reciprocation in a guide tube section of a powered hammer. The ram includes an outer circumferential surface, a radially outwardly projecting sealing portion, and a helically shaped vent channel defined in... | 10/26/2010 |
| 7814986 | Lubricant system for powered hammer A powered hammer includes a housing, a tool holder coupled to the housing and configured to hold a tool, a motor within the housing, a cylinder disposed within the housing, and a piston slideably mounted within the cylinder. A drive mechanism converts rotary output ... | 10/19/2010 |
| D624317 | Tool container | 09/28/2010 |
| 7789168 | Vibration reduction apparatus for power tool and power tool incorporating such apparatus The disclosure describes a handle assembly for a power tool that includes attachment means for attaching the assembly to a housing of a power tool. The handle means is adapted to be held by a user of the power tool and the handle means is mounted to the attachment m... | 09/07/2010 |
| D622120 | Circular saw blade | 08/24/2010 |
| 7762348 | Vibration reduction apparatus for power tool and power tool incorporating such apparatus A power tool has a handle capable of limited movement mounted to its housing. An axle is rotatably connected to the housing and is movable between a first and second positions and is spring biased towards the first position. Arms are connected to and rotate with the... | 07/27/2010 |
| 7743846 | Rotary spindle for power tool and power tool incorporating such spindle A rotary spindle 4 for a power tool such as a hammer drill is disclosed. The spindle 4 comprises a first spindle part 402 for rotation about its longitudinal an axis by means of a motor and having an inwardly directed rim 406, and a secon... | 06/29/2010 |
